code: def read_node_label(node_label):
      f = open(node_label)
      lines = f.readlines()
      node_labels = []
      for line in lines:
          label = int(line.strip())
          node_labels.append(label)
      f.close()
      return node_labels
  
file_path: euler/tf_euler/python/dataset/multigraph_util.py
imports: import sys
  import os
  import json
  import csv
  import random
label_desc: Use image node_id 4 for calling a global function with example usage: read_node_label(node_label) and returns: node_labels